Johns Hopkins scientists report success in significantly suppressing levels of the "hunger hormone" ghrelin in pigs using a minimally invasive means of chemically vaporizing the main vessel carrying blood to the top section, or fundus, of the stomach. An estimated 90 percent of the body's ghrelin originates in the fundus, which can't make the hormone without a good blood supply.
Brain
DALLAS – Sept. 16, 2008 – Researchers at UT Southwestern Medical Center have designed a way to improve electrical stimulation of nerves by outfitting electrodes with the latest in chemically engineered fashion: a coating of basic black, formed from carbon nanotubes.
The nanotube sheathing improves the signals received and transmitted by electrodes, which researchers say is a potentially critical step for advancing electrical nerve stimulation therapy. This type of therapy increasingly shows promise for diseases ranging from epilepsy to depression to chronic leg and back pain.
NEW BRUNSWICK, N.J. – First, he discovered a gene that controls innate fear in animals. Now Rutgers geneticist Gleb Shumyatsky has shown that the same gene promotes "helicopter mom" behavior in mice. The gene, known as stathmin or oncoprotein 18, motivates female animals to protect newborn pups and interact cautiously with unknown peers.
Prosthetic ears appear to improve hearing and speech recognition in noisy environments, according to a report in the September/October issue of Archives of Facial Plastic Surgery, one of the JAMA/Archives journals.
Using magnetic resonance imaging (MRI), physicians can identify soft-tissue defects that contribute to hearing loss in children, according to a report in the September issue of Archives of Otolaryngology–Head & Neck Surgery, one of the JAMA/Archives journals.
The following are highlights of new cancer research being presented at the American Society for Therapeutic Radiology and Oncology's (ASTRO) 50th Annual Meeting on September 21-25, 2008, in Boston.
For full copies of the studies and press releases, contact Beth Bukata at bethb@astro.org or Nicole Napoli at nicolen@astro.org. Studies are embargoed until the time of presentation or unless otherwise stated.
Can scientists predict who will develop anxiety disorders years in advance? UCLA psychology professor Michelle Craske thinks so. She is four years into an eight-year study evaluating 650 students, who were 16 when the study began, to identify risk factors for the development of anxiety and depression — the most comprehensive study of its kind.
You're on your computer, about to buy a vacation package when the phone rings. According to a new study in the Journal of Consumer Research, when you return to the computer after the interruption, you may have a completely different mindset—and make a different decision.
The study's author, Wendy Liu of UCLA, examined the effects of interruption on purchase decisions and the preferences of decision-makers. She found that even brief interruptions caused startling changes.
It's an archetypal exchange in musical performance. A vocalist stands poised to perform. The guitarist alongside is ready to add depth and harmony to the melody.
The guitarist doesn't know the song but "hum a few bars and I'll fake it," she tells the singer. "Could you do it in the style of Radiohead?" asks the vocalist. "No problem," the versatile guitar player says.
Scientists at the National Institutes of Health (NIH) have discovered that an important cellular quality control mechanism may actually be toxic to some brain cells during prion infection. The research, published by Cell Press in the September 16th issue of the journal Developmental Cell, proposes a new general mechanism of cellular dysfunction that can contribute to the devastating and widespread neuronal death characteristic of slowly progressing neurodegenerative diseases.
Young adults staying in or coming to Pennsylvania are attracted to regions that have more units of government and they are not deterred by the large number of local governments in the state, according to a new study.
"Voters like to be close to their local government officials and give input directly to them," says study co-author Stephen Goetz, professor of agricultural and regional economics and director of the Northeast Regional Center for Rural Development at Penn State.
PHOENIX, Ariz. – Sept. 15, 2008 – Investigators at the Translational Genomics Research Institute (TGen) today announced a link between the brain protein KIBRA and Alzheimer's disease, a discovery that could lead to promising new treatments for this memory-robbing disorder.
The new discovery builds on a previous TGen-led study published in the prestigious journal Science, which showed a genetic link between KIBRA and memory in healthy adults.
When we hear somebody described as "frosty" or "cold", we automatically picture a person who is unfriendly and antisocial. There are numerous examples in our daily language of metaphors which make a connection between cold temperatures and emotions such as loneliness, despair and sadness. We are taught at a young age that metaphors are meant to be descriptive and are not supposed to be taken literally. However, recent studies suggest that these metaphors are more than just fancy literary devices and that there is a psychological basis for linking cold with feelings of social isolation.
ANN ARBOR, Mich. —This week, University of Michigan scientists will begin a phase 1 clinical trial for the treatment of cancer-related pain, using a novel gene transfer vector injected into the skin to deliver a pain-relieving gene to the nervous system.
A gene transfer vector is an agent used to carry genes into cells. In this groundbreaking clinical trial, the investigators will use a vector created from herpes simplex virus (HSV) – the virus that causes cold sores – to deliver the gene for enkephalin, one of the body's own natural pain relievers.